
.content_left,.content_middle,.content_right{
	height: 400px;
	display: block;
}
.content_left{
	margin: 0 auto;
	padding: 0;
	border: 1px solid #999;
}

.content_middle{
}


.list_box{

	height: 400px;
}
.content_right{
	border: 1px solid #999;
}




